Home / 15,315.12-22,951.09-12,181.23

Finding the Fourth Proportional to 15,315.12, 22,951.09 and 12,181.23

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Solution

The fourth proportional to 15,315.12, 22,951.09 and 12,181.23 is: 18,254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.12 : 22,951.09 = 12,181.23 : x
  2. Step 2: Convert to fraction form
    15,315.12/22,951.09 = 12,181.23/x
  3. Step 3: Cross multiply
    15,315.12x = 22,951.09 × 12,181.23
  4. Step 4: Simplify right side
    15,315.12x = 279,572,506.04
  5. Step 5: Solve for x
    x = 279,572,506.04/15,315.12
  6. Step 6: Final answer
    x = 18,254.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.